Glossary

5080

The IBM 5080 Graphics System Workstation.

data stream

A stream of data elements being transmitted, or intended for transmission, in character or binary-digit defined format form.

download

To move a file from an IBM host to an IRIS workstation.

Ethernet

A popular local area packet-switched network technology. It is a 10 Mbps broadcast bus with distributed access control. An Ethernet network supports (TCP/IP) and Network File System (NFS).

HLLAPI

High-Level Language Application Program Interface. A library of C-programming routines that can be used in an IRIS application. These routines enable the application to interact directly with an IBM host application in a manner similar to a human operator.

IRISXFR

Silicon Graphics' proprietary file transfer program, which transfers files between the IRIS workstation and IBM MVS/TSO or VM/CMS systems.

link type

The type of connection the IRIS 3270 Emulator uses to communicate with an IBM host, for example TCP.

Presentation Space

The current contents of a TSO3270 screen image.

SNA

System Network Architecture is the description of the logical structure, formats, protocols, and operational sequences for transmitting information units through and controlling the configuration and operation of IBM networks.

TCP

Transmission Control Protocol is the major transport protocol in the Internet suite of protocols providing reliable, connection-oriented, full-duplex streams. TCP uses Internet Protocol (IP) for delivery.

Telnet

The Internet standard protocol for remote terminal connection service. This protocol runs on top of TCP/IP and is the basis of IRIS TCP 3270.

terminal emulation

The act of imitating a terminal. When a workstation mimics a terminal, it performs terminal emulation. The 3270 terminal emulation software enables the IRIS workstation to function as a 3278 or 3279 terminal. During terminal emulation, you can access files and commands on your IBM system from the IRIS workstation.

terminal emulator

The emulation software, window display, and key mappings that perform the functions of a terminal.

upload

To move a file from an IRIS workstation to an IBM host.